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    // const arr=[0,1]
    // const pc = ['海尔', '联想', '小米', '方正'];
    // let  [a =0, b = 0, c = 8 ]= arr
    // console.log(a, b, c) //;  1 0
    let [a,[b,[c,[d,[e,f]]]]]=[1,[3,[5,[7,[9,11]]]]]
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    console.log(d);
    console.log(e);
    console.log(f);
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